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Design aspects of once through systems for heat recovery steam generators for base load and cyclic operation

机译:用于基本负荷和循环运行的热回收蒸汽发生器直流系统的设计方面

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The paper describes a once-through approach to the design of heat recovery steam generators, thereby eliminating boiler drums, and many other items of equipment. Two pressure operation is possible. To enable the steam generator to start up from dry, high creep strength Incoloy type materials are used for all of the tubing. This also enables the system to cope with fluctuations in the water-to-steam transition point. Such a design is therefore highly suitable for cyclic operation. One of the features of this particular design is the ability to operate dry, that is with no water flow through the tubing, even though the gas turbine is at full output. Materials specifications for operation with dirty fuels, particularly in a corrosive marine environment, are discussed. Some details of water treatments needed and typical start up schedules are given. The paper also comments briefly on some of the limitations of conventional HRSGs.
机译:本文介绍了一种用于热回收蒸汽发生器的直通式设计,从而消除了锅炉鼓和许多其他设备。可以进行两个压力操作。为了使蒸汽发生器从干燥状态启动,所有管道均使用高蠕变强度的Incoloy型材料。这也使系统能够应对水-蒸汽转变点的波动。因此,这种设计非常适合于循环操作。这种特殊设计的特征之一是能够干运行,即使燃气轮机满负荷运转,也没有水流过管道。讨论了使用脏燃油(特别是在腐蚀性海洋环境中)运行的材料规范。给出了所需水处理的一些细节以及典型的启动时间表。本文还简要评论了传统HRSG的一些局限性。

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